The true cost of coal isn't just in its price, but in how we manage its consequences.

永远不要停止学习，因为世界从未停止变化。

Trust is the most expensive thing in business.

The quality of an organization's principles determines the quality of its actions.

关系模型基于谓词逻辑和集合论，为数据库管理提供了坚实的数学基础。